package org.wm.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @ClassName:PaymentService
 * @Description: 支付服务
 * @Author:Deamer
 * @Date:2021/12/8 22:35
 **/
@Service
public class PaymentService {
    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo_OK，id：" + id + "\t 好好好！";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler"/*指定善后方法名*/,
            commandProperties = {
                    @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
            })
    public String paymentInfo_TimeOut(@PathVariable("id") Integer id) {
//        int a = 10 / 0;
        try {
            TimeUnit.MILLISECONDS.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程：" + Thread.currentThread().getName() + "访问成功，id：" + id;
    }

    // 用来做善后的方法
    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程：" + Thread.currentThread().getName() + "8001系统繁忙或者运行报错，请稍后再试，id：" + id;
    }

    /**
     * 服务熔断
     *
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "payemntCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),// 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")// 失败率达到多少后跳闸
    })
    public String payemntCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t调用成功，流水号：" + serialNumber;
    }

    public String payemntCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id不能为负数，请稍后重试!id：" + id;
    }
}
